JPH08124752A - Knockdown transformer and its transporting method - Google Patents

Abstract

PURPOSE: To provide a knockdown transformer which has a large size and can be transported while its tap leads and LTC are connected to each other and fitted to a divided tank. CONSTITUTION: In a knockdown transformer which is disassembled for transportation and reassembled for installation, a tank is composed of an upper divided tank 1 having a step or recessed section on its upper surface section and a lower divided tank 2. An on-load tap changer 10 is constituted in such a way that its upper section is protruded upward from the lower surface of the step or recessed section on the upper surface section of the tank 1 and the upper end of the upper section is made lower than the upper end face of the tank 1 and fitted to the tank 1. In addition, tap leads 8 are connected to transformer main bodies 4 and 5 in removable states and at the same time, to the tank 1 so that at least the tank 1 can be loaded on the bed of a vehicle on which the tank 1 can be loaded in a transportable height together with the on-load tap changer 10 and tap leads 8 fitted to the tank 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention disassembles and transports a transformer consisting of an iron core, a transformer main body composed of windings, internal connection parts such as LTC, and a tank accommodating them, into a plurality of parts,
The present invention relates to a disassembled transportation transformer that is reassembled locally and a transportation method thereof.

[0002]

2. Description of the Related Art In recent years, as the demand for electric power has increased, the transmission voltage of the transmission system has been increased to a high voltage such as 500 KV transmission. Therefore, the transformer used for power transmission and transformation is also large and large in capacity. With the increase in size of such transformers, accessory parts such as a load tap changer (LTC) are also increased in size.

Further, due to the lengthening of the power transmission system, there are many cases where a transformer is installed in a mountainous area where transportation conditions are severe. Since the trailer or the like must be transported to such mountainous areas, it is necessary to drastically reduce the transport size and weight in spite of the size of the transformer.

Conventionally, in the case of a transformer installed in a place where transportation conditions are severe, for example, in the case of a three-phase transformer with LTC, three single-phase transformers and an LTC tank are separately divided and transported. After the split transportation, the three-phase transformer with LTC is constructed by connecting and combining the three-phase batch tank or each single-phase transformer using the common duct and the LTC tank on site. Composed. Such a transformer is called a split transportation transformer.

However, when a large-sized and large-capacity transformer is constructed by the split transportation transformer system, the size of the entire transformer is increased, which causes problems such as a site installation space and the economical efficiency of the transformer. . Further, in the transportation of the large-sized and large-capacity transformer by this method, the transportation weight is limited to about 60 tons. Therefore, large-scale road reinforcement work including reinforcement of bridges is required for trailer transportation, and the total transportation cost becomes enormous.

Therefore, when there are particularly severe restrictions on transportation, a transformer assembled in a factory is provided with iron core legs, upper and lower yokes, windings, main body supporting members, main body connecting lead parts, LTCs, split tanks, etc. A subdivided disassembled transport transformer system is used, which is disassembled and subdivided, transported by truck or trailer, and reassembled at the site.

[0007]

However, in the subdivided disassembly transportation transformer system, there is a problem that it takes a long time for factory disassembly and on-site reassembly of internal connection parts such as LTC and many tap leads. Further, there is a problem that the insulating parts absorb moisture during the above period.

As a result, a drying process such as a long vacuum treatment at the installation site is required, and the installation period of the transformer is further lengthened, and foreign matters are more likely to be mixed into the transformer during the construction period. However, problems such as deterioration of transformer quality due to foreign matter are also occurring.

Therefore, even in the LTC subdivision transport system, if the LTC and multiple tap leads can be attached to a split tank and transported, the tap assembly at the site can be simplified and the above-mentioned problems occur. Can also be solved.

However, the LT used in the large capacity transformer
C has a height of more than 3 m, and if it is directly attached to the split tank, it exceeds the limit of the height that can be transported by the trailer.

The present invention has been made in consideration of such a situation. Even if the LTC used in the transformer is large, the tap lead and the LTC are connected to each other in a split tank. An object of the present invention is to provide a disassembling transportation transformer that can be transported while attached and a transportation method thereof.

[0012]

In order to solve the above-mentioned problems, the invention according to claim 1 relates to a transformer main body comprising an iron core and a winding, and an internal connection including a load tap changer and a tap lead. In the disassembling and transporting transformer, which is composed of parts and a tank that accommodates these parts, is disassembled during transportation, and is reassembled at the installation site, the tank has a height or step on the upper surface and an opening on the lower end. Consists of a split upper tank having a height that allows vehicle transportation and a split lower tank having an opening at the upper end.The load tap changer has an upper portion of the upper portion of the upper portion of the divided upper tank that is generated by a step. It is attached to the split upper tank while projecting upward from the lower surface or the depression and the upper end of the upper part is lower than the upper end face of the split upper tank. The transformer body is detachably connected to the transformer body and is attached to the split upper tank, and the transformer body is mounted on the split lower tank and at least the tap tap changer and tap lead under load are mounted. It is a disassembling and transporting transformer in which the attached split upper tank can be loaded at the loading platform position of the vehicle at a height at which the vehicle can be transported.

According to a second aspect of the present invention, the split upper tank is separated from the disassembling and transporting transformer according to the first aspect with at least a load tap changer and a tap lead attached. The divided upper tank is mounted on a transportation plate having an opening, and the lower portion of the load tap changer protruding from the opening of the transportation plate is protected by a bag-shaped member, and this bag-shaped member has a stepped portion at a low position of a vehicle bed. By placing them so that they are opposed to each other, the separated upper tanks are loaded at a position on the vehicle bed where the vehicle can be transported, and at least the upper divided tanks are equipped with the tap changer and tap lead under load. This is a method of transporting a disassembled transport transformer that is transported by.

Further, the invention according to claim 3 is, in the invention according to claim 2, a method of transporting a disassembling transport transformer which transports a bag-shaped member in a state of being inserted into an opening provided in a trailer carrier. .

Furthermore, the invention corresponding to claim 4 is
A transformer main body composed of an iron core and a winding, an internal connection part including a load tap changer and a tap lead, and a tank accommodating these, and are disassembled during transportation,
Installation In a disassembled transport transformer to be reassembled on-site, the tank consists of a split upper tank that has a temporary fixing part for tap leads and an opening at the lower end, and has a height that allows vehicle transportation, and a divided lower tank that has an opening at the upper end. The load tap changer includes a head projecting upward from the upper surface of the split upper tank and a switching switch in a detachable state from the load tap changer body, and Attached to the upper tank, the tap lead is connected to the load tap changer body and detachably connected to the transformer body, and is also attached to the split upper tank,
The transformer main body is placed on the split lower tank, and the split upper tank in which at least the tap changer main body under load and the tap lead are mounted in a vehicle transportable state can be loaded on the vehicle carrier. Is.

On the other hand, the invention corresponding to claim 5 is that the split upper tank is separated from the disassembling and transporting transformer according to claim 4 with at least the load tap changer and the tap lead attached, and Remove the head of the tap changer and the changeover switch from the main body of the tap changer under load, and lift the main body of the tap changer under load and the tap lead as a whole while keeping the connection between them, Position the lower end of the main body and tap lead above the lower end of the split upper tank, fix the tap changer body under load with a temporary support member, and fix the tap lead with a temporary stop. This is a method of transporting a disassembling transport transformer that transports with the tap changer body and tap lead fixed.

[0017]

Therefore, in the disassembling and transporting transformer and the method of transporting the same according to the first and second aspects of the invention, the tap changer and the tap lead during load are still attached and the connection relationship between them is maintained. The split upper tank is disconnected from the disassembly and transport transformer.

By the way, when a cargo such as a transformer is transported by a trailer, the maximum transportable height is about 3 m from the upper end surface of the trailer carrier, but the height of the divided upper tank can be transported by a vehicle such as a trailer. It is set to a high height.

On the other hand, the load tap changer (LTC) is
If it is a large transformer, it exceeds 3 m. Moreover, since the head of the load tap changer protrudes upward from the tank, it is not possible to transport it with the load tap changer attached to the split upper tank of a normal shape.

However, in the split upper tank according to the present invention, a step or a recess is provided at a corresponding position of the head of the load tap changer so that the upper end of the load tap changer is located above the upper end of the split upper tank. I try not to come out.

Further, in the separated upper divided tank, the portion of the load tap changer which is located below the divided upper tank is arranged in correspondence with the opening of the trailer cargo bed or the portion with a low cargo bed step.

At this time, the divided upper tank is arranged on the transportation plate, and the bag-shaped member adapted to the step shape of the trailer loading platform is used to extend below the lower end of the divided upper tank of the tap changer during load. Protect the part where it is present.

Therefore, even if the bag-shaped member is arranged corresponding to the low position portion of the trailer carrier having the step as described above, and the height of the load tap changer exceeds 3 m. At least the divided upper tank can be transported while the load tap changer and the plurality of tap leads are connected and attached to the divided upper tank.

Not only the tap changer at the time of load but also the tap lead is not removed from the divided upper tank, and
Since it can be transported while being sealed while maintaining connection with the tap changer under load, the relationship between the tap changer under load and tap leads can be transported while the factory test is completed, and assembly work at the site is easy. Become.

Further, in the disassembling transportation transformation of the invention according to claim 3, in the invention corresponding to claim 2,
The bag-shaped member is inserted into the opening provided in the trailer carrier and transported.

Furthermore, in the disassembling and transporting transformer and the method of transporting the same according to the fourth and fifth aspects of the invention, the load tap changer and the tap lead are still attached and the connection relationship between them is maintained. As it is, the split upper tank is separated from the disassembly transport transformer.

Next, the head of the tap changer under load and the switching switch are removed from the main tap changer body under load. Further, the head and the tap changer main body with the load removed from the switching switch are lifted as a whole while the connection between the tap lead and the tap lead is maintained, and the lower end of the tap lead and the tap changer main body with load are divided into upper parts. It should not be below the bottom of the tank.

Furthermore, the load tap changer main body is fixed by the temporary support member, and the tap lead is fixed by using the temporary fixing portion. Then, the divided upper tank can be transported while the connection relationship between the tap changer main body and the tap lead when the head and the switching switch are removed and the tap lead is maintained and attached to the divided upper tank. .

Therefore, even if the tap lead is wide such that the tap lead comes out downward from the split upper tank in the assembled state, the height of the entire tap changer under load corresponds to the step or the opening of the trailer carrier. Even if it is too tall, it can be transported without disconnecting the tap lead and at least the tap changer body at the time of loading from the split upper tank. The connection relationship between the tap changer and the tap lead can be transported with the factory test completed, facilitating on-site assembly work.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a front view showing an internal structure of a disassembled transportation transformer according to a first embodiment of the present invention in an assembled state, and FIG. 2 is a disassembled transportation transformer of the same embodiment. A side sectional view of the assembled state of FIG. Further, FIG. 3 is a diagram showing a state of the disassembling and transporting transformer of the embodiment during transportation.

First, the construction of the disassembling and transporting transformer of this embodiment assembled in a factory or at the site of installation will be described with reference to FIGS. In addition, this embodiment is a three-phase LT.
The case of a large capacity transformer with C will be described.

A main body support member 3b is laid on the bottom surface of the tank in a tank composed of an upper divided tank 1 and a lower divided tank 2. A transformer body including an iron core 4 and a winding wire 5 is mounted on the body supporting member 3b. Adjacent to this transformer body, tap changer 1 under load
0 (LTC is load tap changer) is arranged in the vertical direction.

Further, the iron core 4 is composed of upper and lower walls inside the tank,
That is, the upper divided part tank 1 and the divided lower tank 2
Main body support member 3a attached to the inner bottom wall, respectively
And 3b.

On the other hand, a plurality of pairs of plate-like support members 6 which are protruded inward with a pair of upper and lower positions of both side walls on the inside of the tank are attached to the divided upper tank 1, and between the upper and lower pairs of the support members 6. The columns 7 are provided in each of the columns so as to form a gap between the column 7 and the tank inner side wall. Further, on the side wall side of the pillar 7 on the inner side of the tank, a part or all of the several pillars are provided in a direction orthogonal to the pillars,
The tap lead 8 is fixed, which is composed of a large number of lead wires of each set of three sets on both side walls.

The tap leads 8 are attached to the corresponding windings 5 via joints 11. The joint portion 11 is formed by a bolt tightening terminal portion that allows the winding 5 and the tap lead 8 to be easily separated. This joint 1
A side wall of the divided upper tank 1 corresponding to No. 1 is provided with a hand hole 12 as a window for removing and attaching the tap lead 8.

The LTC 10 includes an LTC head 10a and an LTC.
It is composed of a switching switch 10b and an LTC tap selector 10c, and the other end of the winding mounting end of each tap lead 8 is connected to the LTC tap selector 10c.

Here, the LTC 10 is provided at the front end portion of the tank. On the other hand, the transformer body is provided at the rear end of the middle part of the tank. The LTC 10 and the transformer body are separated from each other by an upper partition plate 9a, a lower partition plate 9b, and an intermediate partition plate 9c attached to the pillar 7.
The switching metal powder from is prevented from entering the transformer body. Each partition plate 9a, 12b, 12c is attached from the column 7 toward the inside, and the tap lead 8 passes through the gap between the column 7 and the inner wall of the tank inner side. Tap lead 8
Connects the LTC 10 at the front end portion of the tank and the winding 5 at the rear end portion of the middle portion of the tank.

Among the parts of the LTC10, the LTC head 1
Only 0a projects outward from the upper side wall of the divided upper tank 1. The shape of the divided upper tank 1 corresponds to the shape of the LTC 10. That is, the entire tank front end portion on the upper surface of the divided upper tank 1 or the protruding portion of the LTC head 10a has a step or a recess that is the same as or larger than the height of the LTC head 10a protruding upward from the divided upper tank 1. However, it is lower than the tank upper surface position at the rear end of the middle part of the tank. Therefore, the upper end of the LTC head 10a is located at a position lower than the tank upper surface position at the tank rear end portion. Also. The entire tank is divided into a divided upper tank 1 and a divided lower tank 2 on one plane, and the height from the upper end to the lower end of the divided upper tank 1 is about 3 m,
The height is set so that the trailer can be transported.

At this time, the height of the LTC10 is 3 m.
Since there is a certain degree, the lower part thereof projects below the lower end of the divided upper tank 1. However, the size of the portion projecting below the lower end of the divided upper tank 1 is smaller than the size of the step of the trailer carrier, which will be described later. The support member 6
The pillar 7 and the upper partition plate 9a do not project below the lower end of the divided upper tank 1.

Next, the large-capacity transformer with LTC configured as described above is reassembled into the transportation state as shown in FIG. 3 after the factory test is completed. In FIG. 3, the tap lead 8 is removed from the winding 5 at the joint 11 from the handhole 12. Further, the split lower tank 2 is removed from the split upper tank 1 by removing the mounting bolts,
The iron core 4, the windings 5, the main body supporting members 3a and 3b, the lower partition plate 9b, the intermediate partition plate 9c, etc. are removed from the split upper tank 1.

At this time, in the divided upper tank 1, the tap lead 8, the supporting member 6, the pillar 7, and the pillar 7 mounted on the pillar 7 are attached.
The upper partition plate 2a and the LTC 10 are still attached. In addition, the lower partition plate 9b and the intermediate partition plate 9c
Is also removed from the split upper tank 1.

As shown in FIG. 3, the split upper tank 1 from which the transformer main body and the split lower tank 2 are removed is mounted on a transport plate 14 provided on a trailer carrier 13. Since the parts in the split upper tank 1 except the LTC 10 do not come out below the split upper tank 1,
These parts pose no particular problems.

Here, the trailer carrier 13 is connected to the trailer vehicle body 15 through the mounting portion 16, and the trailer carrier upper surface 13 of the trailer carrier 13 at the portion connected from the mounting portion 16 is connected.
a is the upper surface 1 of the trailer on the rear wheel portion 17 of the trailer truck.
It is lower than 3b, and there is a step between the luggage carrier upper surface 13a and the luggage carrier upper surface 13b. This is caused by the structure of the trailer such as the connection with the trailer body 15 and the height of the rear wheels. In the trailer used in this embodiment, the height of this step, that is, the difference between the upper surface 13a of the loading platform and the upper surface 13b of the loading platform is about 0.5 m.

The transport plate 14 is installed on the upper surface 13b of the luggage carrier, and the LTC 10 projecting from the opening provided in the transportation plate 14 below the divided upper tank 1 is the upper surface 13a of the luggage carrier.
It is arranged on the upper side, and the lower end thereof is located below the height of the upper surface 13b of the loading platform and above the height of the upper surface 13a of the loading platform.

Further, around the lower part of the LTC 10 protruding downward from the opening of the transport plate 14, a transport pocket 18 for protection is provided.
Is provided. The lower surface of the transport pocket 18 is in contact with the luggage carrier upper surface 13a.

At this time, each component of the transformer is surrounded by the divided upper tank 1, the transportation plate 14 and the transportation pocket 18, and is hermetically housed therein. Therefore, the components are protected in the same manner as when the tank is assembled. There is.

Further, between the upper surface 13a of the loading platform and the transportation plate 14, there is provided a support platform 19 for supporting the divided upper tanks 1 and the like loaded on the trailer. From the above, in FIG. 3, the height from the ground height to the upper end of the load, that is, the upper end of the divided upper tank 1 is 4 m or less, which is within the transportation limit height by the trailer.

The lower portion of the loading platform is, for example, the loading platform upper surface 13a, and the bag-shaped member is, for example, the transport pocket 1.
It is composed of 8. Next, a transportation procedure of the disassembling transportation transformer of the present embodiment configured as described above will be described.

The split upper tank 1, the LTC 10, the tap lead 8 and the like constructed on the trailer as shown in FIG. 3 are carried to the installation site by the trailer while being sealed inside the split upper tank 1.

Further, each component other than the components still attached to the split upper tank 1 is carried to the transformer installation site by different trailers. At the installation site, the disassembling and transporting transformer is assembled in the state shown in FIGS. 1 and 2, and the drying process and various adjustments are performed to complete the transformer.

As described above, the disassembling and transporting transformer according to the present embodiment is separable from the transformer body and has the LTC head 10a.
A divided upper tank 1 having a step or a dent is provided at a part thereof so that the upper end of the LTC10 does not protrude from the upper end of the divided upper tank, and the lower part of the LTC10 is a trailer carrier 13.
Since the upper surface 13a of the cargo bed faces the lower portion, the split upper tank 1 can be transported while the connection relationship between the LTC 10 and the tap lead 8 is maintained and both are attached.
It can be shipped with the assembly test verified in the factory, and the disassembly in the factory and the assembly work on site can be greatly shortened.

Further, the pillar 7, the tap lead 8, the LTC 10
Since it is put into the upper split tank 4 for shipment and field assembly without being disassembled in the state of the verification test in the factory, the reliability in quality is high. In addition, since the exposure time at the factory and the site is much shorter than that of the conventional subdivision transport transformer, there is almost no moisture absorption of the insulator and the vacuum process, which is the drying process at the site, can be greatly shortened. It is possible to easily prevent foreign matter from entering.

Further, as described above, the method of transporting the disassembling transport transformer according to the present embodiment uses the transport pocket 18 for the LT.
Since the lower part of C10 is protected during transportation, the LTC10 is effectively protected during transportation in addition to the same effects as the above effects. Furthermore, the inside of the divided upper tank 1 during transportation can be sealed by using the transportation plate 14 as well, so that foreign matter mixing and moisture absorption during transportation can be prevented as much as possible. (Second Embodiment) FIG. 4 is a diagram showing a state of the disassembling and transporting transformer according to a second embodiment of the present invention during transportation. The same parts as those in FIG. Is omitted and only different parts will be described here.

In FIG. 4, a transporting pocket 18 for protecting the LTC 10 is inserted into a cargo bed opening 22 provided in the special trailer cargo bed 21, and projects downward from the divided upper tank 1. Further, the lower end portion of the LTC 10 is housed in the transportation pocket 18.

As described above, in the method of transporting the disassembling and transporting transformer according to this embodiment, the transport pocket 18 of the LTC10 is inserted into the cargo bed opening 22, so that the same effect as in the previous embodiment can be obtained. Large tolerance for large size of (Third Embodiment) FIG. 5 is a front view showing an internal structure of a disassembled transportation transformer according to a third embodiment of the present invention in an assembled state, and FIG. 6 is a disassembled transportation transformer in the same embodiment. It is a figure which shows the state at the time of transportation of. The same parts as those in FIGS. 1 and 3 are designated by the same reference numerals, and the description thereof will be omitted. Here, only different parts will be described.

In addition to the structure of the first embodiment, this disassembling and transporting transformer is provided with temporary support seats 24 corresponding to the respective support members 6. Further, the lower end of the support member 6 or the pillar 7 may protrude from the lower end of the divided upper tank 1.

The temporary support seat 24 is provided on the inner side wall of the divided upper tank 1 above a certain distance from each support member 6,
The support member 6 can be mounted by elevating it in the vertical direction.

In order to bring the factory assembled state of FIG. 5 into the transportation state, first, the transformer main body, the split lower tank 2 and the like are separated, and then the lower surface of the LTC tap selector and the tap are connected to the tap lead 8. The lower surface of the pillar 7 to which the lead 8 is fixed is supported by a jack or the like.

After removing the LTC head 10a, the LTC switching switch 10b and the supporting member 6 from the split upper tank 1, the jack lead is used to tap the tap lead 8, the LTC tap selector 10c, the pillar 7, the supporting member 6 and the upper partition. The plate 9a is entirely pushed up so as to enter the divided upper tank 1.

After that, as shown in FIG. 6, the LTC tap selector 10c is the LTC temporary support member 23, and the support member 6 for fixing the tap lead 8 and the pillar 7 is the temporary support seat 24.
Secure to and load onto the trailer.

At this time, since each component transported together with the divided upper tank 1 does not project downward from the divided upper tank 1, the transportation plate 14b may be a flat plate having no opening. Further, the trailer carrier 25 may not have a step. Further, a support base 26 is provided between the transport plate 14b and the trailer carrier 25.

Further, at the time of on-site assembly, the reverse work is performed to return each part to the position at the time of factory assembly. The temporary fixing portion of the tap lead is, for example, the pillar 7, the supporting member 6, and the temporary supporting seat 2.
4 and.

As described above, in the method of transporting the disassembling and transporting transformer according to this embodiment, the split upper tank 1 which can be separated from the transformer body is provided, the LTC head 10a and the LTC switching switch 10b are removed, and the tap lead is used. Lift the whole with
Since the tap leads and the LTC tap selector 10c are fixed and transported by the temporary support seat 24 and the LTC temporary support member 23 so that these do not come out below the lower end of the split upper tank, the tap lead is split in the assembled state. Even with a wide tap lead that goes out from the upper tank,
In addition, even if the height of the entire LTC10 is too high to be supported by the steps or openings of the trailer carrier, these are not removed from the split upper tank, and the connection relationship between them is maintained. It can be transported.

Therefore, the disassembly at the factory and the assembly work at the site can be greatly shortened. In addition, the pillar 7, tap lead 8, and LTC tap selector 10c are put into the upper split tank 4 for shipment without being disassembled in the state of the verification test in the factory, and they are assembled in the field. Is also high.

Furthermore, since the exposure time at both the factory and the site is very short, there is almost no moisture absorption of the insulator, and the vacuum process, which is the drying process at the site, can be greatly shortened, and the contamination of foreign substances can be easily prevented. You can

Although each embodiment of the present invention deals with a three-phase transformer, the present invention can be applied to other types of transformers as long as they are large transformers. Furthermore, the present invention can be variously modified without departing from the gist thereof.

[0067]

As described above in detail, according to the present invention, even if the LTC used in the transformer is large, the tap lead and the LTC are connected to each other while being attached to the split tank. It is possible to provide a possible disassembling transportation transformer and its transportation method.

Therefore, even if there are many tap leads and connecting parts as in the transformer with LTC in the on-site reassembly method of subdivided disassembly transportation, there is very little disassembly and reassembly on site at the time of factory shipment. The time required for disassembly at the factory and reassembly at the site can be greatly shortened.

Furthermore, since the exposure time of the tap lead and the connecting component is short, it is possible to easily prevent the moisture absorbing foreign matter from entering. In addition, most of the tap leads and connecting parts are sent to the site and reassembled in the state of the verification test in the factory, so the quality is high.

[Brief description of drawings]

FIG. 1 is a front view showing an internal configuration of a disassembled transportation transformer according to a first embodiment of the present invention in an assembled state.

FIG. 2 is a side sectional view of the disassembled transportation transformer of the embodiment in an assembled state.

FIG. 3 is a diagram showing a state of the disassembling and transporting transformer of the same example during transportation.

FIG. 4 is a diagram showing a state of the disassembling and transporting transformer according to the second embodiment of the present invention during transportation.

FIG. 5 is a front view showing the internal configuration of the disassembled transportation transformer according to the third embodiment of the present invention in an assembled state.

FIG. 6 is a side sectional view of the disassembled transportation transformer of the embodiment in an assembled state.

[Explanation of symbols]

1 ... Split upper tank, 2 ... Split lower tank, 3a, 3b
... main body support member, 4 ... iron core, 5 ... winding, 6 ... support member,
7 ... Pillar, 8 ... Tap lead, 9a ... Upper partition plate, 9b ...
Lower partition plate, 9c ... Intermediate partition plate, 10 ... LTC, 10a
… LTC head, 10b… LTC switching switch, 10c… L
TC tap selector, 11 ... Joint, 12 ... Handhole, 13 ... Trailer carrier, 14, 14b ... Transport plate, 1
6, 26 ... Supporting base, 18 ... Transport pocket, 21 ... Special trailer cargo carrier, 22 ... Cargo carrier opening, 23 ... LTC temporary supporting member, 24 ... Temporary supporting seat.

Claims (5)

[Claims] 1. A transformer main body composed of an iron core and a winding, an internal connection part including a load tap changer and a tap lead, and a tank for accommodating them, and disassembled during transportation and installed. In the disassembling transportation transformer to be reassembled on site, the tank includes a split upper tank having a step or a depression on the upper surface and an opening at the lower end and having a height sufficient for vehicle transportation, and a split lower tank having an opening at the upper end. A tank, wherein the load tap changer has an upper portion protruding upward from a lower position surface of the upper surface portion generated by a step or the recess in the upper surface portion of the divided upper tank, and an upper end of the upper portion. It is configured to be lower than the upper end surface of the split upper tank, is attached to the split upper tank, the tap lead is connected to the load tap changer, and The transformer main body is detachably connected to the transformer main body and is attached to the split upper tank, the transformer main body is placed on the split lower tank, and at least the load tap changer and the tap lead are attached. A disassembling and transporting transformer, characterized in that the split upper tank can be loaded at the vehicle bed position where the vehicle can be transported. 2. The split upper tank is separated from the disassembling and transporting transformer according to claim 1 with at least the load tap changer and the tap lead attached, and the split upper tank is opened. The lower part of the load tap changer protruding from the opening of the transport plate is protected by a bag-shaped member, and the bag-shaped member faces the low position portion of the vehicle carrier having the step. The separated upper tanks are loaded at a position where they can be transported on the vehicle bed by the vehicle, and at least the divided upper tanks are provided with the tap changer and the tap lead at the time of loading. A method of transporting a disassembling transport transformer, characterized in that the transport is carried out in place. 3. The method of transporting a disassembling transport transformer according to claim 2, wherein the bag-shaped member is transported while being inserted into an opening provided in a trailer carrier. . 4. A transformer main body composed of an iron core and a winding, an internal connection part including a load tap changer and a tap lead, and a tank accommodating these, and is disassembled during transportation and installed. In the disassembling transportation transformer to be reassembled in the field, the tank has a split upper tank having a temporary fixing portion of the tap lead and an opening at a lower end and having a height that allows vehicle transportation, and a split upper tank having an opening at an upper end. And a lower tank, wherein the load tap changer includes a head projecting upward from an upper surface of the split upper tank and a switching switch in a detachable state from the load tap changer body. Attached to the split upper tank, the tap lead is connected to the load tap changer body, and detachably connected to the transformer body, and The transformer main body is mounted on the split upper tank, the transformer main body is placed on the split lower tank, and at least the load tap changer main body and the tap lead are mounted on the split upper tank in a vehicle transportable state. Disassembling and transporting transformer, which can be loaded on the loading platform. 5. The split upper tank is separated from the disassembling and transporting transformer according to claim 4, with at least the load tap changer and the tap lead being attached, and the load tap changer head and The switching switch is removed from the main tap changer body under load, and the main tap changer body under load and the tap lead are lifted as a whole while keeping the connection between them, and the main tap changer body under load and the tap lead are loaded. The lower end of the split upper tank is positioned above the lower end of the split upper tank, the tap changer main body at the time of load is fixed by a temporary support member, and the tap lead is fixed by a temporary fixing portion. A method of transporting a disassembling transport transformer, characterized in that the tap changer body and the tap lead are transported in a fixed state.